Document Detail

NMR in vitro measurements: a quality control study of the RADX table-top spectrometer.
MedLine Citation:
PMID:  4034675     Owner:  NLM     Status:  MEDLINE    
A series of experiments was performed to evaluate the accuracy and reproducibility of relaxation values obtained by two RADX table-top spectrometers operating at 5 MHz (R5) and 10 MHz (R10) respectively. The output (T1, T2, and proton content) of each machine was compared (for tissue specimens and paramagnetic solutions) to reference spectrometers. In the range of tissue T1's, R5 overestimates T1 by approx. 10% and R10 underestimates by approx. 23%. For tissue specimens, the T2 output of both machines is within 3% of the reference facility. Proton content values correlate well with the % wet weight of tissues (y = .46x + 24, r = .85) but accuracy deteriorates badly if tissue T1 greater than 400 msec or T2 greater than 300 msec. The output of both machines is accurate and reproducible within 5% over the range of tissue relaxation values (biological fluids excluded).
K R Burnett; G L Wolf; E J Goldstein
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Physiological chemistry and physics and medical NMR     Volume:  17     ISSN:  0748-6642     ISO Abbreviation:  Physiol Chem Phys Med NMR     Publication Date:  1985  
Date Detail:
Created Date:  1985-10-09     Completed Date:  1985-10-09     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8502230     Medline TA:  Physiol Chem Phys Med NMR     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  123-9     Citation Subset:  IM    
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MeSH Terms
Body Water / analysis*
Magnetic Resonance Spectroscopy / instrumentation,  methods*
Organ Size
Organ Specificity
Quality Control

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